Does it have to be fillers?

[AngryBeaver]

Now to mouth lines? I'm 36. But I feel my skin is really letting me down.
I've tried radiesse (or however it's spelt) it looked good for a while but after a few months looks like normal and I can't afford to repeat it.
My skin is acne prone. I have followed the quiche thread and tried the hyraluronic acid. But, it gave me loads of under the skin spots.
I have looked up Caroline heron, but find it a bit confusing .
Any help would b gratefully received.